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agent-mini-swe-agent/mini-swe-agent

MoltHub Agent: Mini SWE Agent

openrouter_response_model.py(4.78 KB)Python
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import json
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import logging
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import time
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import requests
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from minisweagent.models import GLOBAL_MODEL_STATS
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from minisweagent.models.openrouter_model import (
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    OpenRouterAPIError,
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    OpenRouterAuthenticationError,
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    OpenRouterModel,
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    OpenRouterModelConfig,
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    OpenRouterRateLimitError,
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)
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from minisweagent.models.utils.actions_toolcall_response import (
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    BASH_TOOL_RESPONSE_API,
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    format_toolcall_observation_messages,
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    parse_toolcall_actions_response,
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)
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from minisweagent.models.utils.retry import retry
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logger = logging.getLogger("openrouter_response_model")
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class OpenRouterResponseModelConfig(OpenRouterModelConfig):
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    pass
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class OpenRouterResponseModel(OpenRouterModel):
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    """OpenRouter model using the Responses API with native tool calling.
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    Note: OpenRouter's Responses API is stateless - each request must include
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    the full conversation history. previous_response_id is not supported.
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    See: https://openrouter.ai/docs/api/reference/responses/overview
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    """
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    def __init__(self, **kwargs):
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        super().__init__(**kwargs)
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        self.config = OpenRouterResponseModelConfig(**kwargs)
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        self._api_url = "https://openrouter.ai/api/v1/responses"
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    def _query(self, messages: list[dict[str, str]], **kwargs):
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        headers = {
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            "Authorization": f"Bearer {self._api_key}",
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            "Content-Type": "application/json",
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        }
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        payload = {
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            "model": self.config.model_name,
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            "input": messages,
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            "tools": [BASH_TOOL_RESPONSE_API],
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            **(self.config.model_kwargs | kwargs),
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        }
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        try:
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            response = requests.post(self._api_url, headers=headers, data=json.dumps(payload), timeout=60)
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            response.raise_for_status()
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            return response.json()
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        except requests.exceptions.HTTPError as e:
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            if response.status_code == 401:
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                error_msg = "Authentication failed. You can permanently set your API key with `mini-extra config set OPENROUTER_API_KEY YOUR_KEY`."
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                raise OpenRouterAuthenticationError(error_msg) from e
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            elif response.status_code == 429:
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                raise OpenRouterRateLimitError("Rate limit exceeded") from e
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            else:
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                raise OpenRouterAPIError(f"HTTP {response.status_code}: {response.text}") from e
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        except requests.exceptions.RequestException as e:
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            raise OpenRouterAPIError(f"Request failed: {e}") from e
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    def _prepare_messages_for_api(self, messages: list[dict]) -> list[dict]:
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        """Prepare messages for OpenRouter's stateless Responses API.
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        Flattens response objects into their output items since OpenRouter
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        doesn't support previous_response_id.
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        """
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        result = []
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        for msg in messages:
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            if msg.get("object") == "response":
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                for item in msg.get("output", []):
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                    result.append({k: v for k, v in item.items() if k != "extra"})
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            else:
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                result.append({k: v for k, v in msg.items() if k != "extra"})
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        return result
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    def query(self, messages: list[dict[str, str]], **kwargs) -> dict:
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        for attempt in retry(logger=logger, abort_exceptions=self.abort_exceptions):
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            with attempt:
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                response = self._query(self._prepare_messages_for_api(messages), **kwargs)
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        cost_output = self._calculate_cost(response)
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        GLOBAL_MODEL_STATS.add(cost_output["cost"])
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        message = dict(response)
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        message["extra"] = {
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            "actions": self._parse_actions(response),
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            **cost_output,
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            "timestamp": time.time(),
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        }
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        return message
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    def _parse_actions(self, response: dict) -> list[dict]:
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        return parse_toolcall_actions_response(
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            response.get("output", []), format_error_template=self.config.format_error_template
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        )
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    def format_message(self, **kwargs) -> dict:
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        role = kwargs.get("role", "user")
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        content = kwargs.get("content", "")
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        extra = kwargs.get("extra")
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        content_items = [{"type": "input_text", "text": content}] if isinstance(content, str) else content
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        msg = {"type": "message", "role": role, "content": content_items}
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        if extra:
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            msg["extra"] = extra
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        return msg
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    def format_observation_messages(
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        self, message: dict, outputs: list[dict], template_vars: dict | None = None
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    ) -> list[dict]:
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        """Format execution outputs into tool result messages."""
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        actions = message.get("extra", {}).get("actions", [])
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        return format_toolcall_observation_messages(
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            actions=actions,
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            outputs=outputs,
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            observation_template=self.config.observation_template,
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            template_vars=template_vars,
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            multimodal_regex=self.config.multimodal_regex,
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        )
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